Brick press



Jan. 7, 1930. 1.. D. OLIVER 1,742,555

BRICK PRESS Filed Aug. 15, 1927 2 Sheets-Sheet 1 Jan. 7, 1930; L. D.OLIVER 1,742,555

BRICK PRESS Filed Aug; 15, 1927 2 Sheets-Sheet 2 Patented Jan. 7, 1930UNITED STATES PATENT OFFECE BRICK PRESS Application filed August 15,1927.

This invention relates to new and useful improvements in a brick press.

One object of the invention is to provide, in a brick press, a noveltype of mould, whereby a plurality of brick may be pressed, or moulded,in a unit, with weakened lines along which the unit may be easily brokenup into individual brick having roughened, or irregular faces.

Another object of the invention is to provide, in a brick press, a mouldhaving means for forming weakened lines separating the brick, of which amoulded unit is composed so that the unitmav be easily broken up intoindividual brick, said means being of such disposition as not tointerfere with the removal of the moulded unit from the mould. \Vith theabove and other objects in view this invention has particular relationto certain novel features of construction, opera tion and arrangement ofparts. an example of which is given in this specification andillustrated in the accompanying drawings, wherein Figure 1 shows alongitudinal vertical seetional view of the mould taken on the line 11of Figure 3 and the associated parts of the press.

Figure 2 shows a transverse vertical sectional view thereof taken on theline 2-2 of Figure 1.

Figure 3 shows a plan view of the mould with the cover removed.

Figure 4 shows a longitudinal vertical sectional view of the mould,showing the cover disposed above the mould box, and illustrating theparts in position for discharging the pressed unit from the mould.

Figure 5 shows a per pective vlew of the pressed unit composed of aplurality of brick integrall joined together, and

Figure 6 shows a pers 'iective view of an individual brick produced fromsaid mould.

Referring now more particularly to the drawings, wherein like numeralsof reference designate similar parts in each of the figures. the numeral1 designates the mould box, of rectangular contour and having the sides2, 2 and the ends 3, 3. The sides 2 of the mould box have the opposedinside vertical ribs 4, 4,

Serial No. 212,955.

which continue across the bottom 5, of the box, forming the transversebottom ribs 6. The ends 3 of the box have the inside oppositely disposedend ribs 7 7 and the bottom 5, has a lengthwise bearing slot 8 alignedwith the ribs 7.

There is a plunger 9 forming the top or cover for the mould, and whichis adapted to fit closely into the mould box and w iose under side hasthe transverse and lengthwise ribs 10, 11 aligned with the respectiveribs 4 and 7.

There is a lengthwise blade 12, adapted to work through the bearing slot8. The upper edge of this blade is beveled to an edge, as is also thefree edges of the ribs 4, 6, 7, 10 and 11. The bottom 5, of the box isfixed to the upper ends of side arms 13, 13 which, in turn, are mountedon the vertically movable table 14, while the mould box 1 is fixed inthe frame 15, of the press. The blade 12 is mounted on the coil springs,or other yieldable seats 16, which in turn are supported by the table14, and normally the sharp edge of said blade projects above the uppersurface of the mould bottom 5'with the stops 17, carried by said bladeresting against the under side of said bottom.

Fastened to, and depending from the blade 12 are the tubes 18, 18, whichextend down through the openings 19, 19, in the table 14. The lower endsof these tubes have the bearing glands 20, 20, screwed therein havingcentral bearings through which the release rods 2-1, 21 work. The upperends of these rods, within the tubes 18 are enlarged, forming plungers22, 22 and their lower ends are attached to a stationary part 23. of thepress.

In operation the mould box is filled with plastic clay, or othermaterial of which the brick is to be formed and the cross head 24,carrying the plunger is then lowered, by the conventional mechanism ofthe press, to compact said material. The unit 25, as thus compacted,will have oppositely disposed vertical side grooves formed by the ribs 4and the aligned top and bottom transverse grooves formed by the ribs 6and 10; also the length-- wise top and bottom grooves, and theconnecting end grooves, formed by the ribs 11, the blade 12 and theI1lOS 7, 7.

lVhen the material is sufiiciently compressed the plunger 9 is elevatedand the bottom 5 is raised, by the table 14, until its upper surface isflush with the top of the mould box. As the table is raised the blade 12will move upwardly with it until the glands 20 contact with the lowerends of the plungers 22 and the upward movement of said blade will bearrested but the bottom will move on upwardly until the compressed unit25 clears the upper edge of said blade, and said unit may be thendischarged laterally from the bottom of the mould box, either manually,or by a suitable automatic mechanism for the purpose with which thepress may be equipped.

While I have shown what I now consider the preferred form of the deviceit is obvious that mechanical changes may be made therein, andequivalents substituted for the parts shown and I reserve the right tomake such changes and modifications in the mechanical structure as maybe comprehended within the scope of the appended claims.

That I claim is 1. A mould having a vertically movable bottom providedwith an elongated bearing means for moving the bottom vertically, ablade working through said bearing and nor-v mally projecting up intothe mould, and means for holding the blade stationary as said bottom ismoved upwardly.

2. A mould having a bottom, top, side and end walls, forming anenclosure for moulding plastic material therein, means extend ingtransversely around the inside of the mould for forming transversegrooves in said compressed material, means for forming longitudinal topand bottom grooves and aligned end grooves in said material, one of saidgroove forming means being movable out of the groove formed by it. y

3. A mould having a vertically movable bottom, means for moving thebottom vertically, a blade associated with the bottom and projectinginto the mould and adapted to form a groove in the material compressedin said mould, said blade being movable with said bottom and means forarresting the movement of said blade to effect its withdrawal from saidgroove.

4. A mould having a vertically movable bottom, means for moving thebottom vertically, a blade associated with the bottom and projectinginto the mould and adapted to form a groove in the material, compressedin said mould, said blade being movable with said bottom and means forarresting the movement of said. blade to efi'ect its withdrawal fromsaid groove, and other means fixed on the inside, walls of the mould forforming top, side and end grooves in the compressed material.

5. A mould having a vertically movable bottom, means for moving thebottom verti-' cally, a blade associated with the bottom and projectinginto the mould and adapted to form a groove in the material compressedin said mould, said blade being movable with said bottom and means forarresting the movement of said blade to effect its withdrawal from saidgroove and other means carried by the mould walls, for forming surfacegrooves in said compressed material.

6. A mould for forming plastic material, inside projections on the wallsof the mould for forming depressions in the material in the mold, one ofsaid projections being movable to permit its withdrawal from thedepression formed by it.

7. A mould for forming plastic material, inside projections on the wallsof the mould for forming depressions in the material in the mould, oneof said projections being movable to permit its withdrawal from thedepression formed by it and means for withdrawing said movableprojection from its depression.

8. A mould for forming plastic material including a mould box, a movablebottom therein. a plunger opposed to said bottom, inwardly extendingmeans associated with and movable with the bottom, and adapted to form adepression in the moulded material, said means being movable relative tothe bottom, to permit its withdrawal from said depression.

9. A mould for forming plastic material including a mould box, a movablebottom therein, a plunger opposed to said bottom, inwardly extendingmeans associated with and movable with the bottom, and adapted to form adepression in the moulded material, said means being movable relative tothe bottom to permit its withdrawal from said depression and othergroove forming projections on the inner walls of the mould.

10. A mould for forming plastic material including a mould box, amovable bottom therein. a plunger opposed to said bottom, inwardlyextending means associated with and movable with the bottom and adaptedto form a depression in the moulded material, said means being movablerelative to the bottom to permit its withdrawal from said depression,means for elevatingsaid bottom and means to lift the moulded materialfrom said box, and means for retarding the movement of said depressionforming means, relative to said bottom, as said bottom is elevated.

In testimony whereof I have signed my name to this specification.

LOTT D. OLIVER.

